APA

Lutz W., Goujon A., .The world's changing human capital stock: multi-state population projections by educational attainment. : .

Chicago

Lutz W, Goujon A, .The world's changing human capital stock: multi-state population projections by educational attainment. : .

Harvard

Lutz W., Goujon A., .The world's changing human capital stock: multi-state population projections by educational attainment. : .

MLA

Lutz W, Goujon A, .: . .